// Copyright 2007 the original author or authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package lichen.components.blob;

import lichen.entities.IBlobModel;

import org.apache.tapestry5.StreamResponse;
import org.apache.tapestry5.annotations.Parameter;
import org.apache.tapestry5.ioc.annotations.Inject;
import org.apache.tapestry5.services.Request;

/**
 * 构造一个显示Blob的组件
 * 
 * @author <a href=mailto:Ghostbb@bjmaxinfo.com>Ghostbb</a>
 * @version $Revision$
 * @since 0.0.3
 */
public class BlobShow<T extends IBlobModel> {

	@Parameter("required")
	private T model;
	
	@Inject
	private Request _request;
	
	private boolean showLink;
	
	public StreamResponse onActionFromShowBlob(){
		return new BlobResponse(model,_request);
	}
	
	/**
	 * 判断是否显示Blob的连接,当Blob内容为空的时候不显示连接
	 * true:显示 false:不显示
	 * @return
	 * @since 0.0.3
	 */
	public boolean isShowLink(){
		return model.getBlobData() != null;
	}
	
	public void setShowLink(boolean showLink){
		this.showLink = showLink;
	}
}
